Threat Signal Report

CVE-2022-22718 on CISA's Known Exploited Vulnerabilities Catalog

description-logo Description

FortiGuard Labs is aware that the U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added CVE-2022-22718 to the Known Exploited Vulnerabilities Catalog. CVE-2022-24481 is a local privilege escalation vulnerability in the Windows Print Spooler and affects multiple versions of Windows OS. Microsoft issued a patch for the vulnerability as part of the February 2022 Patch Tuesday updates.


Why is this Significant?
This is significant because CISA's Known Exploited Vulnerabilities Catalog lists vulnerabilities that are known to be exploited in the wild. Although Microsoft rated CVE-2022-22718 as "Exploitation More Likely" in their advisory, the vulnerability is now on the active exploitation list as such the patch for CVE-2022-22718 should be applied as soon as possible.


What is CVE-2022-22718?

CVE-2022-22718 is a local privilege escalation vulnerability in the Windows Print Spooler and affects multiple versions of Windows OS. Successfully exploiting the vulnerability allows a local attacker to elevate privileges. CVE-2022-22718 has a CVSS score of 7.8.


Has Microsoft Released an Advisory for CVE-2022-22718?
Yes, Microsoft released an advisory on February 8, 2022. See the Appendix for a link to "Windows Print Spooler Elevation of Privilege Vulnerability - CVE-2022-22718".


Has Microsoft Released a Patch for CVE-2022-22718?
Yes, Microsoft released a patch as part of the February 2022 Patch Tuesday (February 8th, 2022).


What is the Status of Coverage?
FortiGuard Labs has the following IPS signature against CVE-2022-22718:


MS.Windows.Print.Spooler.CVE-2022-22718.Privilege.Elevation

Telemetry


Definitions

Traffic Light Protocol

Color When Should it Be used? How may it be shared?

TLP: RED

Not for disclosure, restricted to participants only.
Sources may use TLP:RED when information cannot be effectively acted upon by additional parties, and could lead to impacts on a party's privacy, reputation, or operations if misused. Recipients may not share TLP:RED information with any parties outside of the specific exchange, meeting, or conversation in which it was originally disclosed. In the context of a meeting, for example, TLP:RED information is limited to those present at the meeting. In most circumstances, TLP:RED should be exchanged verbally or in person.

TLP: AMBER

Limited disclosure, restricted to participants’ organizations.
Sources may use TLP:AMBER when information requires support to be effectively acted upon, yet carries risks to privacy, reputation, or operations if shared outside of the organizations involved. Recipients may only share TLP:AMBER information with members of their own organization, and with clients or customers who need to know the information to protect themselves or prevent further harm. Sources are at liberty to specify additional intended limits of the sharing: these must be adhered to.

TLP: GREEN

Limited disclosure, restricted to the community.
Sources may use TLP:GREEN when information is useful for the awareness of all participating organizations as well as with peers within the broader community or sector. Recipients may share TLP:GREEN information with peers and partner organizations within their sector or community, but not via publicly accessible channels. Information in this category can be circulated widely within a particular community. TLP:GREEN information may not be released outside of the community.

TLP: WHITE

Disclosure is not limited.
Sources may use TLP:WHITE when information carries minimal or no foreseeable risk of misuse, in accordance with applicable rules and procedures for public release. Subject to standard copyright rules, TLP:WHITE information may be distributed without restriction.